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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/svg/attribute/r/index.html | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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initial commit
Diffstat (limited to 'files/zh-cn/web/svg/attribute/r/index.html')
-rw-r--r-- | files/zh-cn/web/svg/attribute/r/index.html | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/files/zh-cn/web/svg/attribute/r/index.html b/files/zh-cn/web/svg/attribute/r/index.html new file mode 100644 index 0000000000..3572ba0a07 --- /dev/null +++ b/files/zh-cn/web/svg/attribute/r/index.html @@ -0,0 +1,124 @@ +--- +title: r +slug: Web/SVG/Attribute/r +tags: + - SVG + - SVG属性 +translation_of: Web/SVG/Attribute/r +--- +<div>{{SVGRef}}</div> + +<p><strong><code>r</code></strong> 属性用来定义圆的半径。</p> + +<p>有两个元素在使用该属性:{{SVGElement("circle")}} 和 {{SVGElement("radialGradient")}}</p> + +<div id="topExample"> +<div class="hidden"> +<pre class="brush: css">html,body,svg { height:100% }</pre> +</div> + +<pre class="brush: html"><svg viewBox="0 0 300 200" xmlns="http://www.w3.org/2000/svg"> + <radialGradient r="0" id="myGradient000"> + <stop offset="0" stop-color="white" /> + <stop offset="100%" stop-color="black" /> + </radialGradient> + <radialGradient r="50%" id="myGradient050"> + <stop offset="0" stop-color="white" /> + <stop offset="100%" stop-color="black" /> + </radialGradient> + <radialGradient r="100%" id="myGradient100"> + <stop offset="0" stop-color="white" /> + <stop offset="100%" stop-color="black" /> + </radialGradient> + + <circle cx="50" cy="50" r="0"/> + <circle cx="150" cy="50" r="25"/> + <circle cx="250" cy="50" r="50"/> + + <rect x="20" y="120" width="60" height="60" fill="url(#myGradient000)" /> + <rect x="120" y="120" width="60" height="60" fill="url(#myGradient050)" /> + <rect x="220" y="120" width="60" height="60" fill="url(#myGradient100)" /> +</svg></pre> + +<p>{{EmbedLiveSample('topExample', '100%', 200)}}</p> +</div> + +<h2 id="圆">圆</h2> + +<p>对于 {{SVGElement('circle')}},<code>r</code> 用来定义圆的半径以及它的大小。取值小于或等于零,圆将不会被绘制出来。</p> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="row">值</th> + <td><strong><a href="/docs/Web/SVG/Content_type#Length"><length></a></strong> | <strong><a href="/docs/Web/SVG/Content_type#Percentage"><percentage></a></strong></td> + </tr> + <tr> + <th scope="row">默认值</th> + <td><code>0</code></td> + </tr> + <tr> + <th scope="row">可变性</th> + <td>Yes</td> + </tr> + </tbody> +</table> + +<p class="note"><strong>注:</strong>起始于 SVG2,<code>r</code> 是一个几何属性,意味着该属性也可以用作圆的 CSS 属性。</p> + +<h2 id="径向渐变">径向渐变</h2> + +<p>对于 {{ SVGElement("radialGradient") }},<code>r</code> 用来定义径向渐变终止圆的半径。</p> + +<p>渐变将以此绘制出来:<strong>100%</strong> 渐变停止点会被映射到终止圆的一周上。取值小于或等于零,将会使用最后一个渐变 {{ SVGElement("stop") }} 的颜色和不透明度,导致该区域被绘制为单色。</p> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="row">值</th> + <td><strong><a href="/docs/Web/SVG/Content_type#Length"><length></a></strong> | <strong><a href="/docs/Web/SVG/Content_type#Percentage"><percentage></a></strong></td> + </tr> + <tr> + <th scope="row">默认值</th> + <td><code>50%</code></td> + </tr> + <tr> + <th scope="row">可变性</th> + <td>Yes</td> + </tr> + </tbody> +</table> + +<h2 id="技术规范">技术规范</h2> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">技术规范</th> + <th scope="col">状态</th> + <th scope="col">注释</th> + </tr> + </thead> + <tbody> + <tr> + <td>{{SpecName("SVG2", "geometry.html#R", "r")}}</td> + <td>{{Spec2("SVG2")}}</td> + <td>Definition as a geometry property</td> + </tr> + <tr> + <td>{{SpecName("SVG2", "pservers.html#RadialGradientElementRAttribute", "r")}}</td> + <td>{{Spec2("SVG2")}}</td> + <td>Definition for SVG2 paint servers <code><radialGradient></code></td> + </tr> + <tr> + <td>{{SpecName("SVG1.1", "pservers.html#RadialGradientElementRAttribute", "r")}}</td> + <td>{{Spec2("SVG1.1")}}</td> + <td>Initial definition for <code><radialGradient></code></td> + </tr> + <tr> + <td>{{SpecName("SVG1.1", "shapes.html#CircleElementRAttribute", "r")}}</td> + <td>{{Spec2("SVG1.1")}}</td> + <td>Initial definition for <code><circle></code></td> + </tr> + </tbody> +</table> |